So from what I know about working in the printing industry. All printers do have unique identifying codes on them when they print, if it is a digital press using toner.

I'm really not sure with CMYK 4 color process printing and screen printing....

I do know that when we needed to print things that had unique identifiers we could use software so every print was the same, but all of them had unique codes on them, like for mail outs and things like that.

So from what I know about working in the printing industry. All printers do have unique identifying codes on them when they print, if it is a digital press using toner.

I'm really not sure with CMYK 4 color process printing and screen printing....

I do know that when we needed to print things that had unique identifiers we could using software so every print was the same, but all of them had unique codes on them, like for mail outs and things like that.